GiantBomb reports the offending game, Free Running, appeared on the App Store today, only to be removed in short order.

From screenshots, it seems the copycat was virtually identical to Semi Secret Software’s Canabalt, apparently compiled directly from the original’s source code, which was released as part of a charity promotion.

Don’t let the unfamiliar name put you off; one look at Koumajou Densetsu II is enough to convince that you’ve seen it somewhere before. Frontier Aja’s extraordinary homage to the Castlevania series needs little in the way of introductions.

You won’t need language skills to navigate the demo anyway, providing you’ve played any of Konami’s early Castlevania titles, because this doujin (amateur or fan) production makes no bones of its clone status.

The game was released at the Comiket in Tokyo; there’s a gameplay trailer below.